Article(id=1233737613199339572, tenantId=1146029695717560320, journalId=1149651085930835976, issueId=1233737609160216756, articleNumber=null, orderNo=null, doi=10.12284/hyxb2021086, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1595520000000, receivedDateStr=2020-07-24, revisedDate=1607011200000, revisedDateStr=2020-12-04, acceptedDate=null, acceptedDateStr=null, onlineDate=1772075568722, onlineDateStr=2026-02-26, pubDate=1624550400000, pubDateStr=2021-06-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1772075568722, onlineIssueDateStr=2026-02-26, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1772075568722, creator=13701087609, updateTime=1772075568722, updator=13701087609, issue=Issue{id=1233737609160216756, tenantId=1146029695717560320, journalId=1149651085930835976, year='2021', volume='43', issue='6', pageStart='1', pageEnd='170', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1772075567760, creator=13701087609, updateTime=1772075567760, updator=13701087609, preIssue=null, nextIssue=null, ext=null, issueFiles=null}, startPage=145, endPage=156, ext={EN=ArticleExt(id=1233737613505523769, articleId=1233737613199339572, tenantId=1146029695717560320, journalId=1149651085930835976, language=EN, title=3D transient electromagnetics forward modeling with complex topography and structure: A case study of the TAG hydrothermal field, Mid-Atlantic Ridge, columnId=1194652705852465724, journalTitle=Haiyang Xuebao, columnName=Article, runingTitle=null, highlight=null, articleAbstract=
It is crucial to evaluate seafloor massive sulfides (SMS) in terms of their special distribution. Transient electromagnetic method (TEM) is ideal for land mineral deposits prospecting, but the complicated seafloor topography, inner structure of sulfide deposits and measuring conditions in the hydrothermal field pose a great challenge to its application in the ocean. In order to verify the application potential of TEM in deep-sea exploration, a 3D forward modeling scheme was developed with finite element method, combining with bathymetry data and drilling results. The method was then applied to the TAG hydrothermal field, Mid-Atlantic Ridge, and the result was well fitted with acquired TEM data. By comparing the forward simulation results under different instrument positions, attitudes and altitude, we found that the coincident loop system could effectively detect the active TAG mound ore body when the altitude was less than 60 meters. Complex seafloor topography and how the instrument was being towed could significantly disturb the early time response, while the instrument attitude also made an influence on the detected signal. Therefore, it was necessary to combine the bathymetry data, instrument positioning data and attitude data in the research area to better interpret the measured TEM responses.
, correspAuthors=Chunhui Tao, Jinsong Shen, authorNote=null, correspAuthorsNote=null, copyrightStatement=Copyright © 2021 Pratacultural Science. All rights reserved., copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, authorCompany=null, fund=null, authors=null, authorsList=Zuofu Nie, Chunhui Tao, Jinsong Shen, Zhongmin Zhu), CN=ArticleExt(id=1233737617347506331, articleId=1233737613199339572, tenantId=1146029695717560320, journalId=1149651085930835976, language=CN, title=复杂地形结构下瞬变电磁三维正演模拟, columnId=1149698756456657529, journalTitle=海洋学报, columnName=论文, runingTitle=null, highlight=null, articleAbstract=
如何确定海底多金属硫化物的空间分布并对其进行资源量评价至关重要。瞬变电磁法是陆地金属矿床勘探的重要手段,但海底的崎岖地形、硫化物的复杂结构以及不稳定的近底观测条件为瞬变电磁在海洋中的应用提出了挑战。为验证瞬变电磁方法对热液区硫化物的勘探应用潜力,本文采用了有限元方法,结合大西洋洋中脊TAG热液区实测地形数据和硫化物深部剖面进行三维正演模拟,通过对比仪器在不同位置、姿态、离底高度的正演模拟结果发现:重叠回线探测装置在离底高度小于60 m时,可以有效探测到TAG丘体的高电导率异常。海底复杂地形以及仪器拖曳方式都会对二次场早期响应产生干扰,同时仪器姿态变化也会改变所探测到的响应,这表明,应结合研究区域的海底地形、仪器海底定位以及姿态数据才能更好的对实测瞬变电磁数据进行合理解释。
, correspAuthors=陶春辉, 沈金松, authorNote=null, correspAuthorsNote=
, copyrightStatement=版权所有©《海洋学报》编辑部 2021
聂佐夫,陶春辉,沈金松,等. 复杂地形结构下瞬变电磁三维正演模拟−以大西洋洋中脊TAG热液区为例[J]. 海洋学报,2021,43(6):145–156Nie Zuofu,Tao Chunhui,Shen Jinsong, et al. 3D transient electromagnetics forward modeling with complex topography and structure: A case study of the TAG hydrothermal field, Mid-Atlantic Ridge[J]. Haiyang Xuebao,2021, 43(6):145–156
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1School of Oceanography, Shanghai Jiao Tong University, Shanghai 200240, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1233737618232504525, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1233737613199339572, authorId=1233737617993429185, language=CN, stringName=聂佐夫, firstName=佐夫, middleName=null, lastName=聂, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1上海交通大学 海洋学院,上海 200240, bio={"content":"
聂佐夫(1996—),男,湖南省长沙市人,主要从事瞬变电磁方法及应用研究。E-mail:n1454685400@163.com
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聂佐夫(1996—),男,湖南省长沙市人,主要从事瞬变电磁方法及应用研究。E-mail:n1454685400@163.com
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4中国石油大学(北京) 地球物理学院,北京 102249)])])], keywords=[Keyword(id=1233737619327217945, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1233737613199339572, language=EN, orderNo=1, keyword=transient electromagnetics), Keyword(id=1233737619406909728, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1233737613199339572, language=EN, orderNo=2, keyword=3D forward modeling), Keyword(id=1233737619494990113, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1233737613199339572, language=EN, orderNo=3, keyword=TAG hydrothermal field), Keyword(id=1233737619549516070, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1233737613199339572, language=EN, orderNo=4, keyword=seafloor massive sulfides), Keyword(id=1233737619625013550, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1233737613199339572, language=EN, orderNo=5, keyword=complex topography and structure), Keyword(id=1233737619708899633, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1233737613199339572, language=CN, orderNo=1, keyword=瞬变电磁法), Keyword(id=1233737619809562937, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1233737613199339572, language=CN, orderNo=2, keyword=三维正演), Keyword(id=1233737619885060416, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1233737613199339572, language=CN, orderNo=3, keyword=TAG热液区), Keyword(id=1233737619968946501, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1233737613199339572, language=CN, orderNo=4, keyword=海底多金属硫化物), Keyword(id=1233737620031861065, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1233737613199339572, language=CN, orderNo=5, keyword=复杂地形与结构)], refs=[Reference(id=1233737624070975984, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1233737613199339572, doi=null, pmid=null, pmcid=null, year=null, volume=null, issue=null, pageStart=null, pageEnd=null, url=null, language=null, rfNumber=1, rfOrder=0, authorNames=null, journalName=null, refType=null, unstructuredReference=Rona P A, McGregor B A, Betzer P R, et al. 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2自然资源部第二海洋研究所,浙江 杭州 310012)]), AuthorCompany(id=1233737617792102580, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1233737613199339572, xref=3, ext=[AuthorCompanyExt(id=1233737617800491188, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1233737613199339572, companyId=1233737617792102580, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
3Key Laboratory of Submarine Geoscience, Ministry of Natural Resources, Hangzhou 310012, China), AuthorCompanyExt(id=1233737617808879797, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1233737613199339572, companyId=1233737617792102580, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
3自然资源部海底科学重点实验室,浙江 杭州 310012)]), AuthorCompany(id=1233737617888571578, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1233737613199339572, xref=4, ext=[AuthorCompanyExt(id=1233737617896960186, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1233737613199339572, companyId=1233737617888571578, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
4College of Geophysics, China University of Petroleum (Beijing), Beijing 102249, China), AuthorCompanyExt(id=1233737617905348795, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1233737613199339572, companyId=1233737617888571578, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
4中国石油大学(北京) 地球物理学院,北京 102249)])], figs=[ArticleFig(id=1233737620145107282, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1233737613199339572, language=EN, label=Fig. 1, caption=
High-resolution bathymetry map of the TAG hydrothermal field at the Mid-Atlantic Ridge (a) and the geological structure of the TAG mound (b)The white circles mark known seafloor massive sulfide targets (figure modified from references [22−23])
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大西洋洋中脊TAG热液区高分辨率地形图(a)以及TAG丘体内部地质结构(b)白圈代表已知硫化物堆积体位置(修改自参考文献[22−23])
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Degrees of freedom associated with a tetrahedral element (modified from reference [17]), figureFileSmall=WcEJDxXWJf3Jhj5rCmy91w==, figureFileBig=R72M+yQvjZI8yo6C5B3iJQ==, tableContent=null), ArticleFig(id=1233737621806051697, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1233737613199339572, language=CN, label=图2, caption=
四面体单元自由度(修改自参考文献[17]), figureFileSmall=WcEJDxXWJf3Jhj5rCmy91w==, figureFileBig=R72M+yQvjZI8yo6C5B3iJQ==, tableContent=null), ArticleFig(id=1233737621919297908, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1233737613199339572, language=EN, label=Fig. 3, caption=
3D conductivity model for the TAG moundThe red line in a is the designed survey line with the altitude of 20 m; b is the constructed conductivity model of the ore body; c and d represent the X-Z and Y-Z section; e and f are the constructed mesh for the whole model and the TAG mound respectively
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TAG丘体所在区域三维电导率分布模型a中红线代表正演模拟中测线所在位置(离底20 m);b为TAG丘体的电导率模型;c和d分别为X-Z和Y-Z剖面;e和f分别为全模型与TAG丘体的网格剖分结果
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Forward model of the diffusion of $\partial {B_z} / \partial t$ across the bathymetry of the TAG mound area at four timesteps after transmitter turn-off, figureFileSmall=YvEYcWePY3lw9gUOe+iTFQ==, figureFileBig=fnqkSnw+eynRkei9iDU3/g==, tableContent=null), ArticleFig(id=1233737622250647941, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1233737613199339572, language=CN, label=图4, caption=
发射线圈关闭后4个时间步长上TAG丘体地形处$\partial {B_z} / \partial t$扩散图, figureFileSmall=YvEYcWePY3lw9gUOe+iTFQ==, figureFileBig=fnqkSnw+eynRkei9iDU3/g==, tableContent=null), ArticleFig(id=1233737622355505544, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1233737613199339572, language=EN, label=Fig. 5, caption=
Forward model of the normalized $\partial {B_z} / \partial t$ for a homogeneous seafloor model vs. the model which includes the conductive target after transmitter turned off, graphs at the second column are the SW-NE sections of the TAG mound area, figureFileSmall=EtzuUPKy7Ya+tQ+uNifGJA==, figureFileBig=fJo4jhNzpaZ+Jb1mx+nEWQ==, tableContent=null), ArticleFig(id=1233737622422614412, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1233737613199339572, language=CN, label=图5, caption=
发射线圈关断后,由背景场归一化后的异常场,其中第二列图为西南−东北方向的竖直剖面, figureFileSmall=EtzuUPKy7Ya+tQ+uNifGJA==, figureFileBig=fJo4jhNzpaZ+Jb1mx+nEWQ==, tableContent=null), ArticleFig(id=1233737622519083412, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1233737613199339572, language=EN, label=Fig. 6, caption=
The multibeam bathymetry of the area contains the TAG mound and the MIR zone with the EM02 survey line from COMRA 26th Cruise (a), normalized section of TEM response at the TAG mound (b), and normalized section of TEM response at the MIR zone (c)The different colors refer to different sampling time, with a total of 11 traces from 3 ms to 30 ms logarithmically
, figureFileSmall=as/CzqeXpAhRcYMvIXiVcg==, figureFileBig=+KmUZRvlNmN1CP/eEyYcNA==, tableContent=null), ArticleFig(id=1233737622644912539, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1233737613199339572, language=CN, label=图6, caption=
TAG丘体与MIR区周边多波束地形图及大洋26航次瞬变电磁EM02测线(a)、TAG丘体瞬变电磁归一化响应平剖图(b)和MIR区瞬变电磁归一化响应平剖图(c)平剖图中曲线的不同颜色代表采集时间,3~30 ms按对数采样共11道
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Transient electromagnetics response for coincident loop system (a) and the locations that consist high conductivity anomalies (b), figureFileSmall=SeNv4Ktp6h+YiN95ZzznKA==, figureFileBig=hXU1yzwWJfQXnIs4S31j+Q==, tableContent=null), ArticleFig(id=1233737622867210669, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1233737613199339572, language=CN, label=图7, caption=
瞬变电磁重叠回线系统接收线圈响应(a)和高导异常所在测点位置(b), figureFileSmall=SeNv4Ktp6h+YiN95ZzznKA==, figureFileBig=hXU1yzwWJfQXnIs4S31j+Q==, tableContent=null), ArticleFig(id=1233737622984651190, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1233737613199339572, language=EN, label=Fig. 8, caption=
Part of the collected TEM data at the TAG hydrothermal fieldHighly conductive body refers to the seawater with conductivity of 3 S/m in the upper half space, while sulfide with conductivity of 60 S/m in the lower half space; highly resistive body refers to seawater with conductivity of 3 S/m in the upper half space and basalt with conductivity of 0.1 S/m in the lower half space
, figureFileSmall=xIrVH4OWGXST8K8RNoW6Zg==, figureFileBig=rRKlOz8fhiazfa6g48Xdaw==, tableContent=null), ArticleFig(id=1233737623076925882, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1233737613199339572, language=CN, label=图8, caption=
TAG热液区部分实测瞬变电磁数据良导体指上半空间是电导率为3 S/m的海水,下半空间是电导率为60 S/m的硫化物;高阻体指上半空间是电导率为3 S/m的海水,下半空间是电导率为0.1 S/m的玄武岩
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Section of TEM response under different survey altitudes (a) and the corresponding survey lines (b)The time window for the transient electromagnetic method response is from 3.1 ms to 30 ms in a logarithmic manner, the dashed line is the background response from a homogeneous seafloor model with high resistivity at 80 m altitude. The squared line refers to the background response at 30 ms, which is the latest time that can be detected by TEM survey during the COMRA 26th Cruise
, figureFileSmall=Vpaa7fGE7yc9S9cuUX29Iw==, figureFileBig=ZgVLAxfd0q31KHFU+w0uuQ==, tableContent=null), ArticleFig(id=1233737623316001225, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1233737613199339572, language=CN, label=图9, caption=
不同离底高度下的电压平剖图(a)和对应测线轨迹(b)瞬变电磁响应时窗范围为3.1~30 ms, 以对数间隔采样,虚线所指的背景场响应为离底高度80 m时的纯高阻海底响应,方框虚线为30 ms时的背景场响应,该时刻为大洋26航次实测数据中可探测到的最晚时刻
, figureFileSmall=Vpaa7fGE7yc9S9cuUX29Iw==, figureFileBig=ZgVLAxfd0q31KHFU+w0uuQ==, tableContent=null), ArticleFig(id=1233737623412470222, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1233737613199339572, language=EN, label=Fig. 10, caption=
Transient electromagnetic method response under different loop angle along the X-axis and different altitude, figureFileSmall=tHO0jOD/xHEvGjYd+yfAvg==, figureFileBig=kDdOhjd1u74YJOeQpoiTUg==, tableContent=null), ArticleFig(id=1233737623521522130, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1233737613199339572, language=CN, label=图10, caption=
线圈在不同离底高度下,沿X轴倾角变化时的接收线圈响应曲线, figureFileSmall=tHO0jOD/xHEvGjYd+yfAvg==, figureFileBig=kDdOhjd1u74YJOeQpoiTUg==, tableContent=null), ArticleFig(id=1233737623576048087, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1233737613199339572, language=EN, label=Fig. 11, caption=
Section of TEM response under different topography and survey line conditionsThe time window is from 0.5 ms to 790 ms, in a logarithmic manner
, figureFileSmall=xQR1G/Xr/ZLzH/uMfZzFeQ==, figureFileBig=/y68ZDWDycoH9CyX+UMBWQ==, tableContent=null), ArticleFig(id=1233737623647351259, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1233737613199339572, language=CN, label=图11, caption=
不同地形及测线条件下的瞬变电磁响应平剖图时窗范围为0.5~790 ms,按对数间隔采样
, figureFileSmall=xQR1G/Xr/ZLzH/uMfZzFeQ==, figureFileBig=/y68ZDWDycoH9CyX+UMBWQ==, tableContent=null), ArticleFig(id=1233737623735431648, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1233737613199339572, language=EN, label=Table 1, caption=
Conductivity measurement results of sulfide samples from the TAG hydrothermal field and various onshore basalt samples[23−24]
, figureFileSmall=null, figureFileBig=null, tableContent=
| 采样位置 | 样品描述 | 密度/(kg·m−3) | 孔隙度/% | 电导率/(S·m−1) |
| N of Kane转换断层 | 玄武岩 | 2 819 | 6.5 | 0.05 |
| 塞浦路斯 | 蚀变玄武岩 | 2 383 | 20.3 | 0.29 |
| Southern mound, TAG | 黄铁矿 | 4 454 | 9.8 | 1 315 |
| Shinkai mound, TAG | 黄铁矿、二氧化硅 | 2 361 | 23.9 | 3.03 |
| Rona mound, TAG | 黄铁矿、黄铜矿 | 4 365 | 8.8 | 66.67 |
), ArticleFig(id=1233737623827706339, tenantId=1146029695717560320, journalId=1149651085930835976, articleId=1233737613199339572, language=CN, label=表1, caption=
TAG热液区样品及部分陆地玄武岩样品的电导率测量结果[23−24]
, figureFileSmall=null, figureFileBig=null, tableContent=
| 采样位置 | 样品描述 | 密度/(kg·m−3) | 孔隙度/% | 电导率/(S·m−1) |
| N of Kane转换断层 | 玄武岩 | 2 819 | 6.5 | 0.05 |
| 塞浦路斯 | 蚀变玄武岩 | 2 383 | 20.3 | 0.29 |
| Southern mound, TAG | 黄铁矿 | 4 454 | 9.8 | 1 315 |
| Shinkai mound, TAG | 黄铁矿、二氧化硅 | 2 361 | 23.9 | 3.03 |
| Rona mound, TAG | 黄铁矿、黄铜矿 | 4 365 | 8.8 | 66.67 |
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